30d-60=20d

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Solution for 30d-60=20d equation:


Simplifying
30d + -60 = 20d

Reorder the terms:
-60 + 30d = 20d

Solving
-60 + 30d = 20d

Solving for variable 'd'.

Move all terms containing d to the left, all other terms to the right.

Add '-20d' to each side of the equation.
-60 + 30d + -20d = 20d + -20d

Combine like terms: 30d + -20d = 10d
-60 + 10d = 20d + -20d

Combine like terms: 20d + -20d = 0
-60 + 10d = 0

Add '60' to each side of the equation.
-60 + 60 + 10d = 0 + 60

Combine like terms: -60 + 60 = 0
0 + 10d = 0 + 60
10d = 0 + 60

Combine like terms: 0 + 60 = 60
10d = 60

Divide each side by '10'.
d = 6

Simplifying
d = 6

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